One thing I’ve never understood...
How does a little fuzzy dust, and some fine random gas
turn into a rock? Doesn’t some heat and compression need
to happen? Ok... Maybe a LOT of heat... But I just
don’t see how small rocks form from dust.
That suggests (to me, anyway) that the asteroid belt is
the rubble of a shattered planet — and maybe a water
world.
It wouldn’t stun me at all to hear somebody someday
finds a fossil inside a meteorite that is of provable
non-Earth origin.